Cook the Ground Beef and diced onion on the stove top in large pan. Add your Taco seasoning, salsa, taco/enchilada sauce and tomato sauce and mix well.
In a frying pan warm up the 2 cans of refried beans with your shredded cheddar cheese. Mix well.
Warm up the tortillas in the microwave for 30 or so seconds. Spray your baking pan with cooking spray and preheat oven to 200 degrees.
Spread a good spoonful of refried beans onto each tortilla, add a good scoop of the hamburger mixture, spread it out a bit. You will then wrap it like a burrito. Be careful to not overfill and remember the ends should tuck underneath the rest of the burrito. Lay in your pan one next to the other. Depending on the size of your pan you may need them to overlap slightly. If you are running out of room the cooking spray will make it really easy to squish the burritos so you can add additional ones, or sometimes there is extra room at one edge. It will just depend on how big your pan is.
Drizzle the Taco/Enchilada sauce over the burritos and spread the sauce across the burrito. Then cover all of the burritos with the shredded Colby Jack cheese. Cover with foil, tenting slightly if necessary so the foil does not rest on the burritos and cook for 25 minutes at 250. After the 25 minutes, take the foil off and cook an additional 5 minutes. Once the 5 minutes is up, you are ready to serve.